Leviticus 2:12

12 You may bring them to the LORD as an offering of the firstfruits, but they are not to be offered on the altar as a pleasing aroma.

Read Leviticus 2:12 Using Other Translations

As for the oblation of the firstfruits, ye shall offer them unto the LORD: but they shall not be burnt on the altar for a sweet savour.
As an offering of firstfruits you may bring them to the LORD, but they shall not be offered on the altar for a pleasing aroma.
You may add yeast and honey to an offering of the first crops of your harvest, but these must never be offered on the altar as a pleasing aroma to the LORD .

What does Leviticus 2:12 mean?

John Gill's Exposition of the Bible
Leviticus 2:12

As for the oblation of the firstfruits, ye shall offer
them unto the Lord
Or "in" or "with the oblation", as some render it; that is, along with the oblation of the firstfruits leaven and honey might be offered: the Arabic version is very express, "but for a sacrifice of firstfruits ye" shall offer both to God; as they might be, as before observed; so the Targum of Jonathan,

``for the leavened bread of the firstfruits shall be offered, and dates in the time of the firstfruits; the fruits with their honey shall be offered, and the priest shall eat them:''

but they shall not be burnt on the altar for a sweet savour;
which they could not make, and besides were to be the portion of the priests.
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